Yes, camps are a tremendous way to get the attention of a coaching staff, especially if you are interested in a particular school. Camps give coaches a great opportunity to see you in person, see how you compete, evaluate your abilities and get a feel for your overall skills in person.
Every coaching staff I’ve worked for has gone on to recruit, offer and sign players who they first learned of in their camps, usually a handful for each class. Even players who weren’t ranked or included in local scouting services were able to make a name for themselves at camp.
Also, each college staff usually invites coaches from other levels to work their camps, getting you in front of coaches from multiple schools at a variety of playing levels.